Community psychology is a branch of psychology that focuses on understanding and enhancing the well-being of individuals within their communities. This field of psychology emphasizes the importance of considering the social and cultural context in which people live, as well as the factors that contribute to health and well-being at the community level.

There are a wide range of theories and interventions in community psychology that are designed to promote the mental health and well-being of individuals in the community. Here are 20+ theories and interventions commonly used in community psychology:

1. Ecological Systems Theory: This theory emphasizes the importance of considering the multiple levels of influence that impact individuals, including the family, community, and society.

2. Social Capital Theory: This theory focuses on the importance of social networks and relationships in promoting well-being and resilience.

3. Empowerment Theory: This theory highlights the importance of empowering individuals and communities to take control of their own lives and make positive changes.

4. Participatory Action Research: This approach involves working collaboratively with community members to identify problems and develop solutions.

5. Asset-Based Community Development: This approach focuses on identifying the strengths and assets within a community and building on these to promote well-being.

6. Community Organizing: This intervention involves mobilizing community members to work together to address social issues and create positive change.

7. Community-Based Participatory Research: This approach involves engaging community members as active partners in the research process.

8. Collective Efficacy Theory: This theory emphasizes the importance of social cohesion and trust in promoting community well-being.

9. Social Support Theory: This theory focuses on the importance of social relationships in providing emotional support and reducing stress.

10. Community Resilience Model: This intervention focuses on building the resilience of individuals and communities to cope with adversity.

11. Community Health Workers: These trained individuals work within communities to provide health education and support.

12. Peer Support Groups: These groups provide a supportive environment for individuals facing common challenges.

13. Restorative Justice Practices: These practices focus on repairing harm and restoring relationships within the community.

14. Trauma-Informed Care: This approach involves understanding and responding to the impact of trauma on individuals and communities.

15. Cultural Competence: This intervention involves recognizing and respecting the cultural diversity within a community.

16. Social Justice Advocacy: This intervention involves speaking out against injustice and working towards fair and equitable policies.

17. Community Gardens: These spaces provide opportunities for community members to connect with nature and each other.

18. Mental Health First Aid: This training program teaches individuals how to provide initial support to someone experiencing a mental health crisis.

19. Community-Based Mental Health Services: These services provide accessible and culturally appropriate mental health care within the community.

20. Parenting Programs: These programs provide support and education for parents to promote positive parenting practices.

21. Community Policing: This approach involves building trust and collaboration between law enforcement and community members.

22. Housing First Approach: This intervention focuses on providing stable housing as a first step towards addressing other issues.

These are just a few of the many theories and interventions used in community psychology to promote the well-being of individuals and communities. By understanding and applying these approaches, psychologists can work collaboratively with community members to create positive change and enhance the health and well-being of all.